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Dev Dyn 2010 Oct 01;23910:2627-36. doi: 10.1002/dvdy.22399.
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Zebrafish cx30.3: identification and characterization of a gap junction gene highly expressed in the skin.

Tao L , DeRosa AM , White TW , Valdimarsson G .

We have identified and characterized a zebrafish connexin, Cx30.3. Sequence similarity analyses suggested that Cx30.3 was orthologous to both mammalian Cx26 and Cx30, known to play important roles in the skin and inner ear of mammals. Analysis of mRNA expression showed that Cx30.3 was present in early embryos, and was highly abundant in skin, but also detected in other tissues including fins, inner ear, heart, and the retina. Injection of Cx30.3 cRNA into Xenopus oocytes elicited robust intercellular coupling with voltage gating sensitivity similar to mammalian Cx26 and Cx30. The similarities in functional properties and expression patterns suggest that Cx30.3, like mammalian Cx26 and Cx30, may play a significant role in skin development, hearing, and balance in zebrafish. Thus, zebrafish could potentially serve as an excellent model to study disorders of the skin and deafness that result from human connexin mutations.

PubMed ID: 20737512
PMC ID: PMC2967642
Article link: Dev Dyn
Grant support: [+]

Species referenced: Xenopus
Genes referenced: gjb1 gjb2

References [+] :
Barrio, Gap junctions formed by connexins 26 and 32 alone and in combination are differently affected by applied voltage. 1991, Pubmed, Xenbase